Abstract
The pulse discharging resistance-consolidation of mechanically alloyed powders of amorphous Ni50Ti50 and Ti50Al50 under pseudo-isostatic pressure is proposed as a way of near-net-shape forming, in order to obtain full densification of intermetallic compound and to control nano-scaled structure via crystallization. The proposed PHIP technique using a pressure-transmitting medium of spherical graphite powder makes it possible to manufacture a fully densified bulk of intermetallic Ni50Ti50 at applied pressure of 29 MPa by taking advantage of densification via viscous flow. The increase in pressure from 29 to 147 MPa leads to a great decrease from 1470 K to 1200 K in temperature necessary for full densification, conducive to the synthesis of nano-scaled intermetallic Ti50Al50.
